1. Consider the following manufacturing system where two distinct types of parts are processed on two distinct machines located at the first station and then inspected by an inspector at a second workstation. Type 1 parts are processed only on machine 1 but type 2 parts can be processed on both machine 1 and machine 2. A part enters the system and waits until it is its turn to be processed on its corresponding machine. For type 2 parts, if both machines are idle, then the part is processed in machine 2. After processing on a machine is completed, they continue to the second workstation where they are inspected. At the inspection station, the parts are classified as Good, or Repair. Good parts depart the system; and Repair parts are recycled back to the machines where they are reworked. (Use the given scenarios below to classify the status of a particular inspected part). The waiting parts are ordered at both the machine and the inspection station. Assume that there is a single queue for the machine; whenever the machine becomes idle the part with the highest priority in the queue seizes the machine (same holds for the inspector). The Type 1 parts have priority over the Type 2 parts within the queue. The first portion of the queue contains any Type 1 parts, ordered according to arrival at the queue. The Type 2 parts follow the Type I parts, again ordered according to their sequence of arrival. The priority scheme is non preemptive; that is, if Type 2 part is being processed when a Type I part arrives, processing is not interrupted. The repairable parts returned to the machine's queue have the lowest priority. These parts wait behind Devy regular Type 1 and 2 parts and are ordered according to the time at which they re-enter the queue. This same priority uchome is used for re-inspection of the reworked parts. Thus there are 1. Consider the following manufacturing system where two distinct types of parts are processed on two distinct machines located at the first station and then inspected by an inspector at a second workstation. Type 1 parts are processed only on machine 1 but type 2 parts can be processed on both machine 1 and machine 2. A part enters the system and waits until it is its turn to be processed on its corresponding machine. For type 2 parts, if both machines are idle, then the part is processed in machine 2. After processing on a machine is completed, they continue to the second workstation where they are inspected. At the inspection station, the parts are classified as Good, or Repair. Good parts depart the system; and Repair parts are recycled back to the machines where they are reworked. (Use the given scenarios below to classify the status of a particular inspected part). The waiting parts are ordered at both the machine and the inspection station. Assume that there is a single queue for the machine; whenever the machine becomes idle the part with the highest priority in the queue seizes the machine (same holds for the inspector). The Type 1 parts have priority over the Type 2 parts within the queue. The first portion of the queue contains any Type 1 parts, ordered according to arrival at the queue. The Type 2 parts follow the Type I parts, again ordered according to their sequence of arrival. The priority scheme is non preemptive; that is, if Type 2 part is being processed when a Type I part arrives, processing is not interrupted. The repairable parts returned to the machine's queue have the lowest priority. These parts wait behind Devy regular Type 1 and 2 parts and are ordered according to the time at which they re-enter the queue. This same priority uchome is used for re-inspection of the reworked parts. Thus there are
